The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2015
Filed:
Jul. 18, 2011
Applicants:
Lars Larsson, Hamburg, DE;
Bernhard Dwersteg, Hamburg, DE;
Inventors:
Lars Larsson, Hamburg, DE;
Bernhard Dwersteg, Hamburg, DE;
Assignee:
Trinamic Motion Control GmbH & Co. KG, Hamburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/32 (2006.01); H02P 3/20 (2006.01); H02P 7/06 (2006.01); H02P 25/22 (2006.01); G01R 19/25 (2006.01); H02P 8/12 (2006.01);
U.S. Cl.
CPC ...
H02P 25/22 (2013.01); G01R 19/2509 (2013.01); H02P 8/12 (2013.01);
Abstract
A method and circuit assembly are provided for controlling the motor current in an electric 3-phase motor, in particular in a 3-phase stepper motor, by a chopper process. For at least two of the three motor connections a respective chopper phase is cyclically activated, while a target motor current supplied for the motor connection in question is injected into the motor connection by a chopper process, while the two other motor connections are connected to each other.